Different cells need different protocols. I am not sure about Jurkat, but we have this hamster cell line called BSR T7/5 in the lab and the person who made them only recommends calcium-phosphate transfection. He says lipo or Fugene transfection won't be effective. Also, last time I transfected CAMA-1 and MCF7 with luciferase vector, and it worked better with calcium-phosphate. Personally, I still prefer calcium-phosphate to any other reagent.